FunctionWhen studying and working, avoid repeatedly getting up and opening the door to improve study and work efficiency; prevents mosquitoes and flies from entering the room and can prevent kitchen fumes from entering the living room. Pulley DesignThere is a turbine-powered spring inside, and the wire rope is pulled back by the turbine principle, so that the open door is pulled back and closed. Quick InstallationHole-free glue installation, good strength, does not damage the wall, easy installation, high temperature resistance. DurableThe Automatic Door Closer The sliding door device made of high-quality materials has the characteristics of oxidation resistance, rust resistance, stability and wear resistance, and safety. Very suitable for the use of a family door valve switch. OccasionsAutomatic Sensor Door Closer Very suitable for home, office, garden sheds, ranches, home offices, etc. for doors or gates with stronger closing force. Features: 1. The door sliding device made of high-quality materials has the characteristics of oxidation resistance, rust resistance. 2. Hole-free adhesive installation, good firmness, does not damage the wall, easy installation, high temperature resistance. 3. Suitable for doors or gates with slightly stronger closing force Doors that open left and right, wooden and metal doors, residential and commercial doors, exterior/interior door closers, fire doors. Specification: Material: ABS Plastic + Steel Rope Color: White Package Contents: 2 x Automatic Door Closers